Description:Lionel Messi blew the La Liga title race wide open when the Argentina forward netted a hat-trick in a 4-3 comeback win for the champions at 10-man Real Madrid in an action-paced 'Clasico' on Sunday (March 23). Chasing a fifth title in six years, defeat for Barca at Real's Bernabeu stadium in a match watched by millions around the world would have all-but killed off their challenge but they came out swinging and took a seventh-minute lead through playmaker Andres Iniesta.(1:19)